I've taken caribou with a 130gr .308 and a 250gr .375. Both left dime size exit wounds but turned the hit organs to mush. The one hit with the 130gr was spooked a half second before hit and ran 50 yards with no blood trail into thick alders (which we were lucky to find after 5 minutes of searching), the one hit with the 250 gr dropped right there but needed a second shot as the first was just a high lung shot. Those are the particulars to my experience with the TTSX. In my opinion, they work well enough to enter the premium bullet debate and should be considered. They do run out of expansion velocity earlier than lead bullets so that needs to be considered.

The biggest reason I use them is that I believe they work as well as a premium lead bullet and I know there won't be lead fragments in my meat.